Check out these Scott Henderson Jazz Improvisation theory diagrams, which detail out what to play over any type of chord
Check out these Scott Henderson licks from his 1988 Instructional video: "Jazz Fusion Improvisation".
This site aims at providing free guitar improvisation lessons in the forms of charts, pictures, articles, videos and more.
You can expect some fresh, and original guitar lessons on many topics such as practicing, improvisation, developing your style, or improving technique.
These guitar lessons are intended to provide the fastest learning possible, and to get the most out of your practice time.
Browse and learn from the site and join the forum which has music discussion, playing tips, and general hang out.
(Feb 1, 2009) The reference material in the Chords and Scales theory sections is currently up.
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